<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <style>
      .span {
        width: 100px;
        height: 200px;
        background-color: aqua;
      }
    </style>
    <title>上线啦~</title>
  </head>
  <body>
    <div>
      <h1 class="span">上线项目</h1>
    </div>
  </body>
  <script>
    alert('上线')
    console.log('')
  </script>
</html>
